Jumat, 04 Maret 2011

kangaroo


This species is a very large kangaroo with long, pointed ears and a squared-off muzzle. Males have short, red-brown fur, fading to pale buff below and on the limbs. Females are smaller than males and are blue-grey with a brown tinge, pale grey below, although arid zone females are coloured more like males. It has two forelimbs with small claws, two muscular hind-limbs, which are used for jumping, and a strong tail which is often used to create a tripod when standing upright.

The Red Kangaroo's legs work much like a rubber band. The males can leap over 9 metres (30 ft) in one leap.[3]

Males grow up to a body length of 3 metres (9.8 ft) long and weigh up to 135 kilograms (300 lb). Females reach a body length of up to 1.1 metres (3 ft 7 in) long and weigh up to 35 kilograms (77 lb). Tails can be from 0.9 to 1 metre (3.0–3.3 ft) long. The average Red Kangaroo stands approximately 1.5 metres (4 ft 11 in) tall.[4] Accounts of sizes greater than this are not uncommon, with some large males reportedly reaching approximately 2 metres (6 ft 7 in).

The Red Kangaroo maintains its internal temperature at a point of homeostasis about 36 °C (97 °F) using a variety of physical, physiological, and behavioural adaptations. These include having an insulating layer of fur, being less active and staying in the shade when temperatures are high, panting, sweating, and licking its forelimbs.
The Eastern Grey is easy to recognise: its soft grey coat is distinctive, and it is usually found in moister, more fertile areas than the Red. Red Kangaroos, though sometimes grey-blue in colour, have a totally different face to Grey Kangaroos. Red Kangaroos have distinctive markings in black and white beside their muzzles and along the sides of their face. Grey Kangaroos do not have these markings, and their eyes seem large and wide open. Where their ranges overlap, it is much more difficult to distinguish between Eastern Grey and Western Grey Kangaroos, which are closely related. They have a very similar body shape and facial structure, and their noses/muzzles are fully covered with fine hair (though that is not obvious at a distance, their noses do look noticeably different to the noses of Reds and Wallaroos). The Eastern Grey's colouration is a light-coloured grey or brownish-grey, with a lighter silver or cream, sometimes nearly white, belly. The Western-grey is a dark dusty brown colour, with more contrast especially around the head.[3] Indigenous Australian names include iyirrbir (Uw Oykangand and Uw Olkola) and kucha (Pakanh).[citation needed] The highest ever recorded speed of any kangaroo was 64 kilometres per hour (40 mph) set by a large female Eastern Grey Kangaroo.[4]

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